Great Britain's Natalie Jones will not fight for a Paralympic medal in the women's S6 50m butterfly final after failing to qualify from her heat.
The British hopeful recording a season-best time of 41.97s and finished in fifth place but it wasn't enough to secure a place in tonight's final.
Oksana Khrul of Ukraine stormed out of the blocks to take the top spot and set a new world record time of 36.96s.
Meanwhile, China's Lu Dong won the first heat of the 50m butterfly to set up a place in the final.
